Hobart Welding Products OM-486 Overload Protection, Troubleshooting, Welding, Trouble Remedy

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7-7. Overload Protection

Tools Needed:

3/8 in

5

4

3

YStop engine.

.When a circuit breaker or fuse opens, it usually indicates a more serious problem exists. Contact a Factory Authorized Service Agent.

1 Circuit Breaker CB5

CB5 protects the 24 volt ac output to Remote 14 receptacle RC1. If CB5 opens, 24 volt ac output to RC1 stops.

2 Circuit Breaker CB6

CB6 protects the 115 volt ac output to Remote 14 receptacle RC1. If CB6 opens, 115 volt ac output to RC1 stops.

Press button to reset breaker. 3 Fuse F6 (See Parts List)

F6 protects the engine wiring sys- tem from overload. If F6 opens, engine will not crank.

4Fuse F1 (See Parts List)

5Fuse F2 (See Parts List)

Remove side panel.

F1 protects the exciter excitation winding from overload. If F1 opens, weld and auxiliary power output stops.

F2 protects the stator winding from overload. If F2 opens, weld output stops. Auxiliary power will still be available.

Replace any open fuses. Reinstall cover before operating unit.

1

2

ST-801 945-C / Ref. ST-189 925-A

7-8. Troubleshooting

A. Welding

Trouble	Remedy

No weld output.	Check control settings.

	Check weld connections.

	Disconnect equipment from auxiliary power receptacles during start-up.

	Place Output (Contactor) switch in On position, or move switch to Remote 14 position and connect
	remote contactor to Remote 14 receptacle RC1 (see Sections 4-8 and 5-1).

	Check fuses F1 and F2, and replace if necessary (see Section 7-7).

	Have Factory Authorized Service Agent check brushes, slip rings, and field current control board PC2.

OM-486 Page 27

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Contents Processes OM-486Description From Hobart to You Table of Contents Page ARC Rays can burn eyes and skin Symbol UsageArc Welding Hazards Electric Shock can killEngine Hazards Engine Heat can cause fire Battery Explosion can BlindMoving Parts can cause injury Engine Exhaust Gases can killARC Welding can cause interference Principal Safety StandardsEMF Information Radiation can cause interferenceLES Fumé ES ET LES GAZ peuvent ê tre dangereux Signification des symbolesConsignes DE SÉ Curité Lire Avant Utilisation UN Choc É Lectrique peut tuerLE Bruit peut affecter l’ouïe LE Soudage peut provoquer un in- cendie ou une explosionDES Particules Volantes peuvent blesser les yeux DES PIÈ CES Chaudes peuvent provoquer des brû lures gravesLA Chute DE L’APPAREIL peut blesser DES Organes Mobiles peuvent provoquer des blessures’EXPLOSION DE LA Batterie peut LA Chaleur DU Moteur peut pro- voquer un incendieConsignes relatives aux stimulateurs cardiaques Principales normes de sé curitéInformation sur les champs é lectromagné tiques LE Soudage À L’ARC risque de provoquer des interfé rencesDefinitions SpecificationsSymbol Definitions Weld, Power, And Engine SpecificationsDimensions Dimensions, Weights, and Operating AnglesFuel Consumption Exceeding duty cycle can damage unit and void warranty Auxiliary Power CurveDuty Cycle Volt-Ampere Curves CC/DC ModeCV/DC Mode CC/AC ModeInstalling Welding Generator InstallationEngine Prestart Checks Charger Activating The Dry Charge Battery If ApplicableDo not overfill battery cells Read and follow all instrucConnect negative cable last Connecting The BatteryInstalling Exhaust Pipe Connecting To Weld Output Terminals10 100% Duty Cycle Selecting Weld Cable SizesRemote 14 Receptacle Information 100 ft 30 m Or LessTo stiffen weld puddle Adjusting MIG Weld Puddle ConsistencyStop engine To wet out weld puddleOperating Welding Generator DC Polarity/AC SwitchDo not switch under load Remote Amperage/Voltage SwitchRemote Amperage/Voltage Control Operating Auxiliary Equipment Auxiliary Power Receptacles And Circuit BreakersWeld Current 120 240 Gfci Receptacle Option Optional Auxiliary Power ReceptaclesMaintenance and Troubleshooting Maintenance Label Servicing Optional Spark Arrestor Servicing Air CleanerStop engine and let cool Changing Engine Oil, Oil Filter, And Fuel Filter Idle Speed Adjustment Adjusting Engine SpeedWeld/Power Speed Adjustment Trouble Remedy TroubleshootingOverload Protection WeldingSee engine manual Low weld output Check control settingsCheck and clean air cleaner as necessary see Section Check and adjust engine speed see SectionCheck governor according to engine manual Auxiliary PowerCheck receptacle wiring and connections EngineCircuit Diagram For Welding Generator Electrical DiagramST-190 578-B Selecting Equipment Auxiliary Power GuidelinesGrounding Generator To Truck Or Trailer Frame Amperes x Volts = Watts Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Earth ground if supplyingFarm/Home Equipment Rating Starting Watts Running Watts Approximate Power Requirements For Industrial MotorsApproximate Power Requirements For Farm/Home Equipment Industrial Motors Rating Starting Watts Running WattsContractor Rating Starting Watts Running Watts Approximate Power Requirements For Contractor EquipmentKVA/HP x HP x Power Required To Start MotorHow Much Power Can Generator Supply? Single-Phase Induction Motor Starting Requirements240 120 Ground Typical Connections To Supply Standby PowerCurrent Load Watts Amperes Selecting Extension Cord Use Shortest Cord PossibleMain Assembly Parts List24-Fig Dia Part Description Mkgs Quantity Panel, Front w/Components Panel, Front w/Components -1 Item Generator -1 Item Page Page Page Support ServiceHobart Welding Products Contact your Distributor forCall